Raybestos MC390809 Brake Master Cylinder

Reliable Brake Master Cylinder for Ford Focus

The Raybestos Element3; New Brake Master Cylinder MC390809 is engineered to restore precise brake hydraulics for your Ford Focus. Designed with durable aluminum construction and exact fitment specifications, this master cylinder ensures consistent braking performance.

• Constructed from lightweight, corrosion-resistant aluminum
• Compatible with Ford Focus models requiring a 0.938-inch bore size
• Features 2 mounting holes with a diameter of 0.354 inches for secure installation
• Includes 4 ports with M12x1 thread size for primary and secondary connections
• Part number MC390809 ensures exact replacement fit

About the Raybestos Element3; New Product Line

The Element3; New line by Raybestos focuses on delivering reliable brake hydraulics components with modern materials and precise engineering. This brake master cylinder is part of that line, offering enhanced durability through its aluminum body and carefully designed port threading to match OEM specifications for the Ford Focus.

Detailed Product Description

This brake master cylinder (part number MC390809) is crafted from aluminum to provide a balance of strength and corrosion resistance, essential for maintaining brake system integrity. The 0.938-inch bore size is tailored to the hydraulic requirements of the Ford Focus, ensuring proper fluid displacement and pedal feel. With two mounting holes sized at 0.354 inches in diameter, installation aligns with factory mounting points. The unit includes four ports, each threaded M12x1, accommodating both primary and secondary brake lines for a secure and leak-free connection.

Common Issues Addressed by This Master Cylinder

• Brake pedal sinking or sponginess due to internal seal wear
• Brake fluid leaks around the master cylinder mounting area
• Reduced hydraulic pressure causing poor braking response
• Inconsistent brake pedal travel or engagement
• Failure of original master cylinder components from corrosion or wear

Installation Notes and Tips

• Ensure the mounting holes align precisely with the Ford Focus brake booster
• Use proper torque specifications on mounting bolts to avoid warping
• Bleed the brake system thoroughly after installation to remove air
• Inspect brake lines for damage before reconnecting to the M12x1 ports
• Replace brake fluid with manufacturer-recommended type for optimal performance

Quality Assurance and Warranty

Raybestos manufactures the MC390809 brake master cylinder to meet or exceed OEM standards for fit and function. The aluminum construction provides corrosion resistance and durability under normal operating conditions. While specific warranty details may vary, Raybestos products typically include coverage against defects in materials and workmanship to ensure reliability for Ford Focus owners.